Twenty

Senior Backend Software Engineer

Twenty
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6 months ago
Arlington, VA, USA or New York, NY, USASenior

Base Salary

$159k - $263k/yr

Responsibilities

  • Design and implement scalable backend services in Go for operator decision-making and response.
  • Build high-performance APIs for customer-facing workflows and internal platform capabilities.
  • Model complex relationships in graph databases and optimize schemas and queries.
  • Implement event-driven systems with NATS for real-time operational data streams.
  • Develop automated tests and maintain correctness, security, and performance.
  • Build and operate microservices deployed on AWS with resilient and cost-aware scaling.
  • Create and improve CI/CD pipelines for fast and secure delivery.
  • Partner with cyber operations experts and frontend engineers to develop robust product features and efficient API contracts.
  • Evaluate technologies and patterns that can improve operational outcomes.

Requirements

  • 5+ years of professional software development experience building backend or full-stack applications.
  • Strong proficiency with Go and experience shipping production services in Go.
  • Experience with graph databases such as Neo4j or AWS Neptune, including schema design and query performance.
  • Working knowledge of event-driven architectures and message queues or streaming systems.
  • Experience building and maintaining REST and/or GraphQL APIs.
  • Experience with cloud infrastructure, ideally AWS, and cloud-native deployment patterns.
  • Hands-on experience with containerization and microservices architectures.
  • Strong foundation in secure coding practices and security tradeoffs.
  • Bachelor’s degree in Computer Science, Software Engineering, or a related field, or equivalent practical experience.
  • Preferred qualifications include defense, security, or mission-critical software experience; systems for analysts or operators; production AI/ML integrations; large-scale data processing; open-source contributions; and observability tooling experience.

Benefits

  • Medical, dental, vision, life/AD&D, and disability plan options.
  • Paid parental leave, including 12 weeks for birthing parents, 4 weeks for non-birthing parents, and 6 weeks for adoptive, foster, or intended parents through surrogacy.
  • Paid holidays and flexible PTO.
  • 401(k) with pre-tax and Roth options, plus HSA/FSA and dependent care FSA options.
  • Onsite, full-time role in the United States; U.S. citizenship is required, and no active security clearance is required unless specified for a particular position.

Tech Stack

AWSGoGraphQLNeo4j

Categories

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About Twenty

51-200 employees
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